Jens hansen



(No Model.)

J. HANSEN. APPARATUS FOR SMELTING CAST IRONBORINGS, TURNINGS, ANDSHAVINGS.

WITNESSES INVENTOR A TTOHN E Y8 UNITED PATENT OFFICE.

J ENS HANSEN, OF HELSINGOR, DENMARK.

APPARATUS FOR SMELTING CAST-IRON BORINGS, TURNINGS, AND SHAVINGS.

SPECIFICATION forming part of Letters Patent No. 473,741, dated April26, 1892.

Application filed October 4, 1889. Serial No. 326,008. (No model.)Patented in Switzerland January 18, 1890, No. 1,887.

To all whom it may concern.-

Be it known that 'I, J ENS HANSEN, a subject of the King of Denmark,anda citizen of Denmark, residing at Helsingor, Sjoelland, Denmark, haveinvented certain new and'useful Improvements in Apparatus for theSmelting of Cast-Iron Borin gs, Turnin gs, and Shavings, (patented inSwitzerland January 18, 1890,'No. 1',887;) andI do declare the followinto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawing, and tothe letters of reference marked thereon, which form a part of thisspecification.

For the smelting of cast-iron shavings there has hitherto, so far as Iam aware, not been any practically applicable apparatus which might beused with advantage, and the said refuse has therefore been valueless.

The apparatus forming the subject of my invention and represented in theaccompanying drawing, presses the shavings through an aperture in theside of the smelting-furnace opposite the smelting-compartment, and theintroduction is done in such a manner that the shavings shall not bethrown back to the apparatus by the blast, nor can the apparatus beblown down by the furnace, as has happened hitherto when attempts havebeen made to smelt this kind of material.

The accompanying drawing, which forms a part of this specification,illustrates my invention by showing one of my improved apparatus incentral vertical section, partly in elevation, in connection with thesmeltingfurnace, of which a piece of wall S, opposite to thesmeltingcompartment a, is shown.

A represents a cylindrically-shaped case, which is cast together withthe stand A, and has also a funnel A", which is cast upon it.

B represents a support, which is supported from the furnace-wall andcarries both the stand and the other apparatus. In the case is placed aninclined screw 13, firmly fixed on a tube D, which serves as an axle toit, and has its bearing in a socket E, which is screwed firmly onto thestand. The outermost end of the tube D is placed in such a connection,with a stationary tube F that it can rotate independently thereof, andthe tube F has, as the drawing shows, a bend that leads to the furnace,where it debouches in an air-chamber G, which is walled into thefurnace-wall 5. On the tube D is also placed a large cogwheel II, whichengages with a smaller cogwheel I on the short axle K, which is carriedby the stand A. The axle is provided with a crank-arm, by which motionmay be imparted to it.

The shavings which are thrown into the funnel A" are by the inclinedscrew B carried through the room 0 into the smeltingcompartment a of thefurnace. Contemporary with this a strong aircurrent is led through thetube M into the air-chamber G. The latter surrounds the case A, which bythat means is protected against the heat of the furnace and thefurnace-wall. From the air-chamber a current of air is passing throughthe tube F and comes from this into the tube D, from the opposite end ofwhich a powerful current of air is carried through the compartment 0into the smeltin g-compartment a. The air-current to the air-chamber Ghas thus the double object to keep the case A cool and to prevent acounter-blast arising from the smelting-compartment against theapparatus, by which the shavings might be thrown back. 0 is a flue fromthe air-chamber to the smeltbig-compartment.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a smelting apparatus, the combination of the furnace, provided withan air-chamber,

a stand provided with suitable supports and having a cylindrical caseprovided with a supply-hopper and opening into the furnace, a hollowtube revolubly mounted within the case and having a spiral wing, anair-pipe communicating with said tube, a bee ring for said tube, and ahollow connection between the said tube and the air-chamber, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JENS HANSEN.

Witnesses:

A. G. SINDHART, A. LARSEN.

